<template>
  <div class="Aside">
    <el-menu
      default-active="1-4-1"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"
      background-color="#545c64"
      text-color="#fff"
      active-text-color="#ffd04b"
      :collapse="isCollapse"
    >
      <h3>{{ sysName }}</h3>
      <el-menu-item
        @click="clickMenu(item)"
        v-for="item in noChildren"
        :index="item.name"
        :key="item.name"
      >
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{ item.label }}</span>
      </el-menu-item>
      <el-submenu
        v-for="item in hasChildren"
        :index="item.label"
        :key="item.name"
      >
        <template slot="title">
          <i :class="'el-icon-' + item.icon"></i>
          <span slot="title">{{ item.label }}</span>
        </template>
        <el-menu-item-group
          v-for="subItem in item.children"
          :key="subItem.name"
        >
          <el-menu-item :index="subItem.path">{{ subItem.label }}</el-menu-item>
        </el-menu-item-group>
      </el-submenu>
    </el-menu>
  </div>
</template>

<script>
import { mapState } from "vuex";
export default {
  name: "ComAsideVue",
  data() {
    return {
      menuData: [
        {
          path: "/",
          name: "home",
          label: "首页",
          icon: "s-home",
          url: "Home/Home",
        },
        {
          path: "/mall",
          name: "mall",
          label: "商品管理",
          icon: "video-play",
          url: "MallManage/MallManage",
        },
        {
          path: "/user",
          name: "user",
          label: "用户管理",
          icon: "user",
          url: "UserManage/UserManage",
        },
        {
          label: "拓展",
          icon: "location",
          children: [
            {
              path: "/page1",
              name: "page1",
              label: "页面1",
              icon: "setting",
              url: "Else/PageOne",
            },
            {
              path: "/page2",
              name: "page2",
              label: "页面2",
              icon: "setting",
              url: "Else/PageTwo",
            },
          ],
        },
      ],
    };
  },
  computed: {
    noChildren() {
      return this.menuData.filter((item) => !item.children);
    },
    hasChildren() {
      return this.menuData.filter((item) => item.children);
    },
    ...mapState("aside", ["isCollapse"]),
    sysName() {
      return this.isCollapse ? "系统" : "通用后台管理系统";
    },
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item) {
      if (
        this.$route.path !== item.path &&
        !(this.$route.path === "/home" && item.path === "/")
      )
        this.$router.push(item.path);
      else {
        console.log("无需跳转，已在当前页");
      }
    },
  },
};
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100vh;
  border: none;
  h3 {
    color: #fff;
    text-align: center;
    margin-left: -10px;
    line-height: 48px;
    font-size: 16px;
    font-weight: 400px;
    white-space: nowrap;
  }
}
</style>